Upcoming Events

Correlated Phase Behavior of Doped and Parent Iridates

March 11, 2014 11:00AM to 12:00PM

Presenter

Chetan Dhital, Boston College

Location

Building 223, Room S105

Type

Seminar

Series

Materials Science Seminar

Abstract:
Iridium based oxides are subject of interest due to the rather unusual electronic/magnetic ground states they host. These unusual states arise due to the modification in energy hierarchy which is mainly caused by interplay between spin-orbit interaction, lattice distortion and electronic correlations. Out of the many oxides containing iridium in its 4+ valence state, the Ruddelsden-Popper (RP) series [Srn+1IrnO3n+1] oxides are some of the most interesting systems to study.

My work is focused on transport, magnetization and neutron scattering study of two representative compounds of this RP series: Sr3Ir2O7 (n-2) and Sr2IrO4 (n-1). First, I will discuss some of basic investigations into the spin structures of these materials and previously unreported structural superlattice peaks with use of unpolarized and polarized neutron scattering. I will also present our study on in plane charge carrier doped system Sr3 (Ir1-xRux)2O7 which not only maps the electronic/magnetic phase diagram of this binary system but also shows the importance of electronic correlations.